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GB1336590A - Automatic electrostatographic developability control apparatus - Google Patents

Automatic electrostatographic developability control apparatus

Info

Publication number
GB1336590A
GB1336590A GB6052970A GB6052970A GB1336590A GB 1336590 A GB1336590 A GB 1336590A GB 6052970 A GB6052970 A GB 6052970A GB 6052970 A GB6052970 A GB 6052970A GB 1336590 A GB1336590 A GB 1336590A
Authority
GB
United Kingdom
Prior art keywords
photo
toner
control apparatus
hopper
dec
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6052970A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of GB1336590A publication Critical patent/GB1336590A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S222/00—Dispensing
    • Y10S222/01—Xerography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

1336590 Toner dispensing systems; automatic control of concentration XEROX CORP 21 Dec 1970 [29 Dec 19691 60529/70 Headings G2H G3R Developer from a cascade developing system Fig.1 (not shown) is directed by a chute 38 between Nesa glass plates 48, 50 which are alternately electrically energized with a polarity to attract toner thereto. A photo-cell P1 is illuminated through the plates 48, 50 by a lamp L-1 which also illuminates a photo-cell P2 through a filter 56, filter 56 being indicative of optimum development. The outputs of the photo-cells are compared by a circuit Figs.3, 4 (not shown) which controls a motor for dispensing toner from a hopper (30) Fig.1 (not shown). The motor rotates a cam (34) which reciprocates a perforated grid (32) at the bottom of the hopper.
GB6052970A 1969-12-29 1970-12-21 Automatic electrostatographic developability control apparatus Expired GB1336590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88872769A 1969-12-29 1969-12-29

Publications (1)

Publication Number Publication Date
GB1336590A true GB1336590A (en) 1973-11-07

Family

ID=25393765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6052970A Expired GB1336590A (en) 1969-12-29 1970-12-21 Automatic electrostatographic developability control apparatus

Country Status (12)

Country Link
US (1) US3635373A (en)
JP (1) JPS508941B1 (en)
BE (1) BE760748A (en)
CA (1) CA923546A (en)
CH (1) CH524843A (en)
DE (1) DE2062961C3 (en)
ES (1) ES386750A1 (en)
FR (1) FR2077575B1 (en)
GB (1) GB1336590A (en)
NL (1) NL7018823A (en)
PL (1) PL84605B1 (en)
SE (1) SE362511B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873197A (en) * 1973-11-15 1975-03-25 Xerox Corp Apparatus for regulating the toner concentration in a electrophotographic device
US3926145A (en) * 1974-03-04 1975-12-16 Honeywell Inf Systems Toner concentration detector
US4043293A (en) * 1976-05-03 1977-08-23 Xerox Corporation Developability regulating apparatus
JPS53137860U (en) * 1977-04-06 1978-10-31
US4579253A (en) * 1977-05-17 1986-04-01 Savin Corporation Toner control system
JPS5438131A (en) * 1977-09-01 1979-03-22 Olympus Optical Co Ltd Toner concentration detecting method of dry type two component developer
US4346985A (en) * 1979-06-25 1982-08-31 Xerox Corporation Automatic development control
US4447145A (en) * 1982-04-30 1984-05-08 Xerox Corporation Charged particle sensor
US4633728A (en) * 1985-09-05 1987-01-06 Ford Motor Company Gear selector control for manual transmission
US4662313A (en) * 1985-10-23 1987-05-05 Xerox Corporation Image density controller
DE3542812A1 (en) * 1985-12-04 1987-06-11 Ford Werke Ag SWITCH LOCK FOR REVERSE GEAR OF A MULTI-SPEED CHANGEOVER GEARBOX
DE3806286A1 (en) * 1988-02-27 1989-08-31 Meteor Siegen Apparat Schmeck Device for controlling the toner concentration of a toner liquid in a copier
JP2000304693A (en) * 1999-04-16 2000-11-02 Nec Niigata Ltd Method and apparatus for measurement of concentration of developer as well as transfer apparatus
US20030113649A1 (en) * 2001-12-12 2003-06-19 Xerox Corporation Developer composition having improved noise signal ratio in an optical toner concentration sensing system
JP6004799B2 (en) * 2012-07-10 2016-10-12 キヤノン株式会社 Developer container and image forming apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control
US3430606A (en) * 1968-01-02 1969-03-04 Xerox Corp Electroscopic particle sensor
US3526338A (en) * 1968-01-02 1970-09-01 Xerox Corp Method and controller for dispensing electroscopic material

Also Published As

Publication number Publication date
CA923546A (en) 1973-03-27
DE2062961C3 (en) 1981-07-09
FR2077575A1 (en) 1971-10-29
CH524843A (en) 1972-06-30
SE362511B (en) 1973-12-10
NL7018823A (en) 1971-07-01
DE2062961B2 (en) 1980-07-03
DE2062961A1 (en) 1971-07-01
JPS508941B1 (en) 1975-04-08
FR2077575B1 (en) 1973-02-02
BE760748A (en) 1971-06-23
US3635373A (en) 1972-01-18
ES386750A1 (en) 1973-03-16
PL84605B1 (en) 1976-04-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee